gistfile1.txt

curl -d @cci.json https://<user>:<api_key>@api.softlayer.com/rest/v3/SoftLayer_Virtual_Guest/createObject


cci.json:
{
 "parameters":[
     {
         "hostname": "host1",
         "domain": "example.com",
         "datacenter": { "name": "sjc01" },
         "startCpus": 1,
         "maxMemory": 2000,
         "hourlyBillingFlag": true,
         "localDiskFlag": true,
         "operatingSystemReferenceCode": "CENTOS_6_64",
         "blockDevices": [{"device": 0, "diskImage": {"capacity": 100}}],
         "primaryNetworkComponent": { "networkVlan": { "id": 263023} }
     }
 ]
}